First World War:

Primary Source Documents:
Song & Sheet Music: "Good Bye Broadway, Hello France," words by C. Francis Reisner and Benny Davis with music by Billy Baskette (1917).
http://www.firstworldwar.com/audio/goodbyebroadway.htm
Sheet Music: "Good Bye France (You'll Never Be Forgotten by the U.S.A.)," by Sargent Irving Berlin (1918).
http://www.thejumpingfrog.com/?page=shop/flypage&product_id=540482&CLSN_461=12028388214614f6842099b9b614cce2
Sheet Music: "Liberty: The Song of Our Land," by Ted S. Barrons (1916).
http://scriptorium.lib.duke.edu/sheetmusic/a/a20/a2069/a2069-1-150dpi.html
Post: "You, Buy a Liberty Bond Lest I Perish!" (1917).
http://americanastockphotos.com/images/070621165355_Vintage_Statue_of_Liberty_War_Bond_Poster_LG.jpg
Poster: "All About Liberty Bonds." (1917).
http://www.rare-posters.com/3436.html
Poster: "That Liberty Shall Not Perish."
http://www.rainfall.com/posters/WWI/204.htm
Poster: "For Liberty's Sake Enlist in the Navy."
http://www.rainfall.com/posters/WWI/449.htm
Poster: "Food Will Win the War."
http://www.firstworldwar.com/posters/images/pp_us_13.jpg
Poster: "Your Duty--Buy United States Government Bonds." (1917).
http://www.rare-posters.com/793.html

Secondary Sources:
Essay: "North Carolinians and the Great War."
http://docsouth.unc.edu/wwi/postersintro.html


Second World War:

Primary Source Documents:
Poster: "Liberty for All Keep 'Em Flying."
http://www.rainfall.com/posters/WPA/1353.htm
Poster: "Industry--The Arsenal of Democracy."
http://digital.library.unt.edu/data/rarebooks/posters/500_999/meta-dc-238.tkl
Poster: "85 Million Americans Hold War Bonds." (1945).
http://digital.library.unt.edu/data/rarebooks/posters/001_499/meta-dc-536.tkl
Animated Cartoon: "Der Fuehrer's Face." (1942).
[DVD: Please See Chuck.]
http://commons.wikimedia.org/wiki/Image:Here_are_the_the_liberators-Italian_WWII_Poster_-_Statue_of_Liberty.jpg
http://www.decodog.com/inven/military/ml28645.jpg

Secondary Sources:
Article: "Fete of Liberty Held at Statue," The New York Times (1942).
Fete of Liberty Held at Statue.pdf
Website: "Mobilizing for War: Poster Art of World War II.
http://www.trumanlibrary.org/museum/posters/index.html